Pokerproshares.com

Despite the US legal situation the Online Gambling industry is booming.
And Online Poker is a big part of this.

Online Gambling will show continue to show great performance.

Especially when the USA will legalize online poker again next year after the Antigua dispute.  ==> article

So faryou can only try to get a piece of the cake by buying shares of online casino companies like Partygaming.  (chart here ).

As you can see in the chart this is not without risk, although the company still makes big money.